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Solution


Q.

In an expression a×10b                                                           [2024]

 
1 a is order of magnitude for b≤5  
2 b is order of magnitude for 5<a≤10  
3 b is order of magnitude for a≥5  
4 b is order of magnitude for a≤5  

Ans.

(4) 

        a×10b

       if a≤5 order is b

       a>5 order is b+1